--- product_id: 9425917 title: "Kester Solder 24-6040-0027 44 Series Core Size 66 Sn60 Pb40 Activated Rosin Cored 21 Awg Solder Wire" brand: "kester" price: "$142.74" currency: USD in_stock: true reviews_count: 8 category: "Kester" url: https://www.desertcart.us/products/9425917-kester-solder-24-6040-0027-44-series-core-size-66 store_origin: US region: United States of America --- # 44 Rosin Activated Flux - superior flow 21 AWG Gauge - precision wiring Sn60/Pb40 Alloy - reliable melt point Kester Solder 24-6040-0027 44 Series Core Size 66 Sn60 Pb40 Activated Rosin Cored 21 Awg Solder Wire **Brand:** kester **Price:** $142.74 **Availability:** ✅ In Stock ## Summary > 🔥 Solder Like a Pro, Join the Elite Craftsmanship Club ⚙️ ## Quick Answers - **What is this?** Kester Solder 24-6040-0027 44 Series Core Size 66 Sn60 Pb40 Activated Rosin Cored 21 Awg Solder Wire by kester - **How much does it cost?** $142.74 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/9425917-kester-solder-24-6040-0027-44-series-core-size-66) ## Best For - kester enthusiasts ## Why This Product - Trusted kester brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Precision 21 AWG Wire Gauge:** Ideal thickness for detailed electronics and circuit board work, balancing control and efficiency. - • **Flawless Connections Every Time:** Premium Sn60/Pb40 alloy ensures consistent melting and strong joints for professional-grade soldering. - • **Made in the USA, Trusted Worldwide:** Crafted domestically with strict quality standards, giving you peace of mind on every spool. - • **1 lb Spool for Long-Lasting Projects:** Generous wire length means fewer interruptions and more productivity on your critical builds. - • **Activated Rosin Core for Effortless Flow:** 44 series rosin flux activates instantly, reducing oxidation and improving solder wetting. ## Overview Kester's 24-6040-0027 solder wire features a 60/40 tin-lead alloy with a 44 series activated rosin core, delivering superior flow and reliable joints. The 21 AWG gauge wire is perfect for precision electronics work, all made in the USA and supplied on a 1 lb spool for extended use. ## Description 44 Series core size 66 SN60 PB40 activated rosin Cored 21 AWG solder 2Ire., country of origin - United States, manufacturer name - Kester Solder. ## Features - Alloy composition: Sn60/Pb40 - Flux type: 44 rosin activated - Country of origin - united states - Core size: 66 in - Spool size: 1 lb ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0032UVNJW | | Best Sellers Rank | #214,453 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #473 in Solder | | Brand | Kester | | Brand Name | Kester | | Color | Kester "Yellow" Core (Rosin Core) | | Customer Reviews | 4.9 out of 5 stars 80 Reviews | | Gauge | 21 | | Global Trade Identification Number | 00700604235135 | | Included Components | Kester 24-6040-0027#2 | | Item Weight | 16 ounces | | Manufacturer | KESTER SOLDER | | Material | lead, tin | | Material Type | lead, tin | | Model | 24-6040-0027 | | No. of wires | 1 | | Number Of Wires | 1 | | Number of Cable Strands | 1 | | Part Number | 24-6040-0027 | | Strands | 1 | | UPC | 700604235135 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** Kester - **Color:** Kester "Yellow" Core (Rosin Core) - **Gauge:** 21 - **Material:** lead, tin - **Number of Cable Strands:** 1 ## Images ![Kester Solder 24-6040-0027 44 Series Core Size 66 Sn60 Pb40 Activated Rosin Cored 21 Awg Solder Wire - Image 1](https://m.media-amazon.com/images/I/51yF-hQMBNL.jpg) ![Kester Solder 24-6040-0027 44 Series Core Size 66 Sn60 Pb40 Activated Rosin Cored 21 Awg Solder Wire - Image 2](https://m.media-amazon.com/images/I/71-rlKYo1GL.jpg) ![Kester Solder 24-6040-0027 44 Series Core Size 66 Sn60 Pb40 Activated Rosin Cored 21 Awg Solder Wire - Image 3](https://m.media-amazon.com/images/I/81z21iyp6ZL.jpg) ![Kester Solder 24-6040-0027 44 Series Core Size 66 Sn60 Pb40 Activated Rosin Cored 21 Awg Solder Wire - Image 4](https://m.media-amazon.com/images/I/61HXZiLazDL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by D***D on May 19, 2023* ### ⭐⭐⭐⭐⭐ Review *by R***R on September 24, 2025* ### ⭐⭐⭐⭐⭐ Review *by W***L on March 22, 2022* ## Frequently Bought Together - Kester Solder 24-6040-0027 44 Series Core Size 66 Sn60 Pb40 Activated Rosin Cored 21 Awg Solder Wire - Weller 70 Watt Digital Soldering Station | WE1010NA - Lesnow solder wick braid 10ft Length Desoldering Wick Braid Remover Tool Solder Sucker 1 piece No-Clean soldering Wick Wire Roll and Disassemble Electrical Components --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/9425917-kester-solder-24-6040-0027-44-series-core-size-66](https://www.desertcart.us/products/9425917-kester-solder-24-6040-0027-44-series-core-size-66) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-17*